What Kind of Pool do I have?

STOP using dry acid. It adds sulfates to the pool with damages plaster, concrete and metals. Us muriatic acid to lower pH.

How are you testing your water?

For TA and pH, do this:
  1. TA > 80: When pH gets to 8.0, lower your pH to 7.6. pH will rise. When pH gets to 8.0, lower to 7.6 again. This will lower TA over time.
  2. When TA is between 60 and 80: DON'T lower pH to 7.6. pH will be fairly stable between 7.8 and 8.0. If it is stable at 7.8, 7.9 or 8.0, leave pH alone.
Great tool for pool management:

I'd review all these articles:
 
STOP using dry acid. It adds sulfates to the pool with damages plaster, concrete and metals. Us muriatic acid to lower pH.

How are you testing your water?

For TA and pH, do this:
  1. TA > 80: When pH gets to 8.0, lower your pH to 7.6. pH will rise. When pH gets to 8.0, lower to 7.6 again. This will lower TA over time.
  2. When TA is between 60 and 80: DON'T lower pH to 7.6. pH will be fairly stable between 7.8 and 8.0. If it is stable at 7.8, 7.9 or 8.0, leave pH alone.
Great tool for pool management:

I'd review all these articles:
thx for Tips.

My Total Alkalinity is govering around 40-50. So i Guess I gotta get it over 60?

then just follow your tip?

re:Muriatic Acid, how much do I add? for like a 20,000 gal pool to lower 8-7.8 pH (or even 8->7.6). how do I make the calculation.


-D
 
STOP using dry acid. It adds sulfates to the pool with damages plaster, concrete and metals. Us muriatic acid to lower pH.

How are you testing your water?

For TA and pH, do this:
  1. TA > 80: When pH gets to 8.0, lower your pH to 7.6. pH will rise. When pH gets to 8.0, lower to 7.6 again. This will lower TA over time.
  2. When TA is between 60 and 80: DON'T lower pH to 7.6. pH will be fairly stable between 7.8 and 8.0. If it is stable at 7.8, 7.9 or 8.0, leave pH alone.
Great tool for pool management:

I'd review all these articles:
re: water testing
- I use a color testing strip, but 60% of the time I'll go to Leslies and they do a free water test, that gives me exact numbers in PPM and exact pH

can I use this Muriatic Acid from Home Depot? :

 

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yeah strips are hard to tell, depends on light, its inaccurate

but the Lesilie's pool service exact measure i think works (temporarily cause i have to drive over). But they do give EXACT measurements.
LPS testing is no better than guess strips.
Just because they provide "EXACT measurements" doesn't mean they are accurate.
Their whole business model is to get people to believe their instore testing is accurate - and then sell you a bunch of over-priced magic potions you don't need. And when those don't work - and mess up your pool water more - they will sell you another batch of magic potions to "fix" the issue their first round of magic potions caused.

Honestly - you can pull two different samples from your pool at the exact same time and you take one in and have someone else take the other in - chances are high the two results will be vastly different.
 
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If you really want to take charge of your pool and know exactly what your pool needs, get one of the recommended test kits. It will pay for itself and save you time and money.

Test Kits Compared

I'm patial to the TFTestkits TF-100 and TF-Pro as they offer more of the reagents we as residential pool owners use most. The electronic stirring device is a "must have" as well - it makes testing so much easier, accurate and consistent. A big plus is TFTestkits offers fresh reagents, guarantees the reagents for one year and will stand behind their offerings - something hard to find today.
 
yeah strips are hard to tell, depends on light, its inaccurate

but the Lesilie's pool service exact measure i think works (temporarily cause i have to drive over). But they do give EXACT measurements.
Leslie’s is not very accurate. If you have two of them in the area, you can take the same water sample to both and get wildly different results. You could even take the same water sample back a couple hours later and get wildly different results.
 
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My Total Alkalinity is govering around 40-50. So i Guess I gotta get it over 60?
If this is pool store testing, realize that alkalinity is reported differently and is not useful in PoolMath.
If your pH is rising and you're not adding baking soda, it's more likely that your TA is higher than you want it to be, not lower.

As others are saying - the only way to know is self-testing.
Test Kits Compared
 
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